playground-stm32/neopixel_f103_mvp
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This commit is contained in:
Attila BODY 2018-12-16 17:56:48 +01:00
parent d140baf50e
commit 087af69592
10 changed files with 414 additions and 204 deletions
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App/App.cpp Normal file
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/*
* App.cpp
*
* Created on: Dec 16, 2018
* Author: abody
*/
#include "main.h"
#include "stm32f1xx_hal.h"
#include "dma.h"
#include "spi.h"
#include "gpio.h"
#include <string.h>
#include "App/Pixel.h"
#include "App/LedBuffers.h"
void convert(uint8_t *src, uint8_t *dst, uint16_t size)
{
static uint8_t const bits[4] = { 0b10001000, 0b10001110, 0b11101000, 0b11101110 };
while(size--) {
uint8_t byte=*src++;
uint8_t duo = 3;
do {
uint8_t mask = 3 << (duo<<1);
*dst++ = bits[(byte & (mask))>>(duo<<1)];
} while(duo--);
}
}
extern "C" void App()
{
#define BRIGHTNESS 4
#define DELAY 10
g_ledBits[sizeof(g_ledBits)-1] = 0;
memset(g_pixels, 0, sizeof(g_pixels));
while(1)
{
for(uint16_t idx=0; idx < NUMPIXELS; idx++)
{
if(idx % 3 == 0) g_pixels[idx].r = BRIGHTNESS;
else if(idx % 3 == 1) g_pixels[idx].g = BRIGHTNESS;
else g_pixels[idx].b = BRIGHTNESS;
convert((uint8_t*)g_pixels, g_ledBits, sizeof(g_pixels));
HAL_SPI_Transmit_DMA(&hspi1, g_ledBits, sizeof(g_ledBits));
while(!g_done);
HAL_Delay(DELAY);
}
for(uint16_t idx=0; idx < NUMPIXELS; idx++)
{
if(idx % 3 == 0) g_pixels[idx].r = 0;
else if(idx % 3 == 1) g_pixels[idx].g = 0;
else g_pixels[idx].b = 0;
convert((uint8_t*)g_pixels, g_ledBits, sizeof(g_pixels));
HAL_SPI_Transmit_DMA(&hspi1, g_ledBits, sizeof(g_ledBits));
while(!g_done);
HAL_Delay(DELAY);
}
}
}